Home / 129,949.86-194,986.76-70,784.22

Finding the Fourth Proportional to 129,949.86, 194,986.76 and 70,784.22

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Solution

The fourth proportional to 129,949.86, 194,986.76 and 70,784.22 is: 106,210.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,949.86 : 194,986.76 = 70,784.22 : x
  2. Step 2: Convert to fraction form
    129,949.86/194,986.76 = 70,784.22/x
  3. Step 3: Cross multiply
    129,949.86x = 194,986.76 × 70,784.22
  4. Step 4: Simplify right side
    129,949.86x = 13,801,985,363.01
  5. Step 5: Solve for x
    x = 13,801,985,363.01/129,949.86
  6. Step 6: Final answer
    x = 106,210.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.